sudo cp ./aarch64-virt/uImage_virt /sync/tftp/
sudo cp ./aarch64-virt/virt.dtb /sync/tftp/
#sudo rm -rf /sync/rootfs_aarch64/*
sudo cp -rf ./rootfs-aarch64/* /sync/rootfs_aarch64
sudo chmod -R 777 /sync/rootfs_aarch64
